tire size MAZDA MODEL 3 HATCHBACK 2021 User Guide

Roads with repeated up and down
slopes
Driving on poor roads or unpaved
roads.
The distance between your vehicle
and the vehicle ahead is extremely
short.
A vehicle suddenly comes close,
such as by cutting into your lane.
To prevent incorrect operation of the
system, use tires of the same
specified size, manufacturer, brand,
and tread pattern on all four wheels.
In addition, do not use tires with
significantly di fferent wear patterns
or tire pressures on the same vehicle
(Including the temporary spare tire).
If the battery power is weak, the
system may not operate correctly.
When driving on roads with little
tra ffic and few vehicles ahead or
obstructions for the front radar
sensor to detect, “Safety and Driver
Support Systems Temporarily
Disabled. Front Radar Obscured.
Drive Safely” may be temporarily
displayed, however, this does not
indicate a problem.
The radar sensors are regulated by
the relevant radio wave laws of the
country in which the vehicle is
driven. If the vehicle is driven
abroad, authorization from the
country in which the vehicle is driven
may be required.
Front Side Radar Sensor*
▼ Front Side Radar Sensor
Your vehicle is equipped with front
side radar sensor. The following
systems also use the front side radar
sensor.
Front Cross Tra
ffic Alert (FCTA)
The front side radar sensor function by
detecting the radio waves re flected o ff
a vehicle approaching from the front or
an obstruction sent from the radar
sensor.
1. Front side radar sensor

The front side radar sensors are
installed inside the front bumper, one
on each side.
Always keep the surface of the front
bumper near the front side radar
sensors clean so that they operate
normally. Also, do not apply items such
as stickers.
Refer to Exterior Care on page 6-48.
CAUTION
If the front bumper receives a severe
impact, the system may no longer
operate normally. Stop the system
immediately and have the vehicle
inspected at an Authorized Mazda
Dealer.
When Driving
i-ACTIVSENSE
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Tire Pressure MonitoringSystem (TPMS)
▼Tire Pressure Monitoring System
(TPMS)
The TPMS monitors the air pressure of
each tire and if it decreases below the
speci
fied value, the system
notifies the
driver by turning on the TPMS warning
light in the instrument cluster and
indicating a message on the
multi-information display.
For the TPMS, the air pressure data
sent from the tire pressure sensors
installed on each wheel via radio signal
is received by the receiver unit in the
vehicle to monitor the tire pressures.
1. Tire pressure sensors

In addition, the current tire pressures
can be checked using the center
display.
Refer to the Vehicle Status Monitor
section in the Mazda Connect
Owner's Manual.
NOTE
When the ambient temperature is
low, the tire temperatures also
decrease. If the tire temperatures
decrease, the air pressure in the tires
will also decrease which could turn
on the TPMS warning light.
Before driving, visually inspect the
tires for abnormalities. Additionally,
inspect the tire pressures monthly. A
digital type air pressure gauge is
recommended for inspecting the tire
pressures.
The TPMS is not a substitute for your
own periodic inspection of the tires.
Always inspect the tires yourself
periodically.
CAUTION
 Each tire, including the spare (if
provided), should be checked
monthly when cold and
inflated to
the in flation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label. (If your vehicle has
tires of a different size than the size
indicated on the vehicle placard or
tire in flation pressure label, you
should determine the proper tire in flation pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a
tire pressure monitoring system
(TPMS) that illuminates a low tire
pressure telltale when one or more
of your tires is significantly
under-in flated. Accordingly, when
the low tire pressure telltale
illuminates, you should stop and
check your tires as soon as possible,
and in flate them to the proper
pressure. Driving on a signi ficantly
under-in flated tire causes the tire to
overheat and can lead to tire failure.
Under-in flation also reduces fuel
e ffi ciency and tire tread life, and may
a ff ect the vehicle's handling and
stopping ability.
When Driving
Tire Pressure Monitoring System (TPMS)
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9. Install the upper cover.
10.Insert the tabs of the lower coverinto the slots of the transmitter and
install the lower cover.
Tires
▼Tires
For reasons of proper performance,
safety, and better fuel economy, always
maintain recommended tire
inflation
pressures and stay within the
recommended load limits and weight
distribution.
WARNING
Using Di fferent Tire Types:
Driving your vehicle with di fferent
types of tires is dangerous. It could
cause poor handling and poor braking;
leading to loss of control.
Except for the limited use of the
temporary spare tire, use only the
same type tires (radial, bias-belted,
bias-type) on all four wheels.
Using Wrong-Sized Tires:
Using any other tire size than what is
speci fied for the vehicle (page 9-10)
is dangerous. It could seriously a ffect
ride, handling , ground clearance, tire
clearance, and speedometer
calibration. This could cause you to
have an accident. Use only tires that
are the correct size speci fied for the
vehicle.
Maintenance and Care
Owner Maintenance
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▼Replacing a Wheel
WARNING
Always use wheels of the correct size
on your vehicle:
Using a wrong-sized wheel is
dangerous. Braking and handling could
be a
ffected, leading to loss of control
and an accident.
CAUTION
A wrong-sized wheel may adversely
a ff ect:
 Tire fit
 Wheel and bearing life
 Ground clearance
 Snow-chain clearance
 Speedometer calibration
 Headlight aim
 Bumper height
 Tire Pressure Monitoring System
NOTE
When replacing a wheel, make sure
the new one is the same as the
original factory wheel in diameter,
rim width, and o ffset (inset/outset).
For details, contact an Authorized
Mazda Dealer.

Proper tire balancing provides the best
riding comfort and helps reduce tread
wear. Out-of-balance tires can cause
vibration and uneven wear, such as
cupping and flat spots.
Light Bulbs
▼ Light Bulbs
Front
Ty p e A
1. Vanity mirror lights*
2. Overhead lights/ Front map lights
3. Side turn signal lights*
4. Front side-marker lights
5. Parking lights
6. Headlights (High/Low beam)/
Daytime running lights
7. Front turn signal lights
Ty p e B
1. Vanity mirror lights*
2. Overhead lights/ Front map lights
3. Side turn signal lights*
4. Parking lights/Front side-marker
lights
5. Headlights (High/Low beam)/ Daytime running lights
6. Front turn signal lights
Maintenance and Care
Owner Maintenance
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1. Park on a hard, level surface off the
right-of-way and firmly set the
parking brake.
2. Put a vehicle with an automatic transmission in Park (P), a manual
transmission in Reverse (R) or 1,
and turn o ff the engine.
3. Turn on the hazard warning flasher.
4. Have passengers get out of the vehicle and away from the vehicle
and tra ffic.
5. Remove any luggage, the jack, tools, and spare tire (page 7-3).
6. Block the wheel diagonally opposite the flat tire. When
blocking a wheel, place a tire block
both in front and behind the tire.
NOTE
When blocking a tire, use rocks or
wood blocks of su fficient size if
possible to hold the tire in place.
▼ Removing a Flat Tire
WARNING
When jacking-up a vehicle, always
shift the shift lever to 1st or R position
(manual transmission vehicle) or shift
the selector lever to P position
(automatic transmission vehicle),
apply the parking brake, and place
wheel blocks in the position
diagonally opposed to the jack:
Changing a
flat tire without using
wheel blocks is dangerous because the
vehicle may move and fall o ff the jack
even with the shift lever in 1st or R
position, or the selector lever is in P
position, which could result in an
accident.
1. If your vehicle is equipped with a wheel cover, pry off the wheel
cover with the beveled end of the
jack lever.

NOTE
Force the end of the jack lever
firmly between wheel and cover, or
removal will be di fficult.
If Trouble Arises
Flat Tire
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When there is a malfunction in the
AWD system.
“Excessive AWD System Load. Drive
Slowly Until Warning Light Turns Off .
Vehicle Now in Front Wheel Drive” is
displayed/When the light is flashing
The indication is displayed/the light
flashes under the following conditions.
Park the vehicle in a safe place and
check that the warning indication light
turns off / the warning light stops
fl ashing, and then drive the vehicle.
Contact an Authorized Mazda Dealer
if the indication is continuously
displayed.
When the differential oil temperature
is excessively high.
When there is a large difference
between the front and rear wheel
rotation, such as when trying to
remove the vehicle from mud.
“Mismatched Tire Diameters. Vehicle
Now in Front Wheel Drive” is
displayed/When the light is turned on
The indication is displayed/the light
turns on under the following
conditions. Inspect the tire sizes or tire
pressures on all 4 wheels. Contact an
Authorized Mazda Dealer if the
indication remains on or the warning
light remains illuminated.
When any of the tire diameter is di fferent.
When any of the tire pressure is
incorrect.
▼ TCS/DSC Indication/Indicator
Light (Turns on)
If the light stays on, the TCS, DSC or
the brake assist system may have a
malfunction and they
may not operate
correctly. Take your vehicle to an
Authorized Mazda Dealer.
▼ Air Bag/Front Seat Belt
Pretensioner System Warning
Indication/Warning Light
A system malfunction is indicated if the
warning light constantly
flashes,
constantly illuminates or does not
illuminate at all when the ignition is
switched ON. If any of these occur,
consult an Authorized Mazda Dealer
as soon as possible. The system may
not operate in an accident.
WARNING
Never tamper with the air bag/
pretensioner systems and always have
an Authorized Mazda Dealer perform
all servicing and repairs:
Self-servicing or tampering with the
systems is dangerous. An air bag/
pretensioner could accidentally
activate or become disabled causing
serious injury or death.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Tire Labeling
▼Tire Labeling
Federal law requires tire manufacturers
to place standardized information on
the sidewall of all tires. This
information identi
fies and describes
the fundamental characteristics of the
tire and also provides a tire
identi fication number for safety
standard certi fication and in case of a
recall.
▼ Information on Passenger Vehicle
Tires
Please refer to the sample below.
1. SAFETY WARNING
2. Passenger car tire
3. Nominal width of tire in millimeters
4. Ratio of height to width (aspect
rat io)
5. Radial
6. Run- flat tire
7. Rim diameter code
8. TIN : U.S. DOT tire
identification
number
9. Load index & speed symbol
10.Severe snow conditions
11.Tire ply composition and materials used
12.Max. load rating
13.Tread wear, traction and temperature grades
14.Max. permissible in flation pressure

P215/65R15 95H is an example of a
tire size and load index rating. Here is
an explanation of the various
components of that tire size and load
index rating. Note that the tire size and
load index rating may be di fferent from
the example.
P
Indicates a tire that may be installed on
cars, SUVs, minivans and light trucks as
designated by the Tire and Rim
Association (T&RA).
NOTE
If your tire size does not begin with a
letter this may mean it is designated by
either ETRTO (European Tire and Rim
Technical Organization) or JATMA
(Japan Tire Manufacturing
Association).
215
“215” is the nominal width of the tire
in millimeters. This three-digit number
gives the width in millimeters of the
tire from sidewall edge to sidewall
edge. In general, the larger the
number, the wider the tire.
65
“65” is the aspect ratio. This two-digit
number indicates the tire's ratio of
height to width.
R
“R” is the tire construction symbol. R
indicates “Radial ply construction”.
15
“15” is the wheel rim diameter in
inches.
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Tread Wear, Traction and Temperature
Grades
Tr ea d w ea r : The tread wear grade is a
comparative rating based on the wear
rate of the tire when tested under
controlled conditions on a speci fied
government test course. For example,
a tire graded 150 would wear one and
one-half (1 1/2) times as well on the
government course as a tire graded
100.
Traction: The traction grades, from
highest to lowest are AA, A, B, and C.
The grades represent the tire's ability
to stop on wet pavement as measured
under controlled conditions on
speci fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.
Temperature: The temperature grades
are A (the highest), B and C,
representing the tire's resistance to the
generation of heat and its ability to
dissipate heat when tested under
controlled conditions on a speci fied
indoor laboratory test wheel.
Snow Tires
In some heavy snow areas, local
governments may require true snow
tires, those with very deeply cut tread.
These tires should only be used in pairs
or placed on all four wheels. Make
sure you purchase snow tires that are
the same size and construction type as
the other tires on your vehicle.
SAFETY WARNING
The following safety warning appears
on the tire's sidewall.
SERIOUS INJURY MAY RESULT FROM :
EXPLOSION OF TIRE/RIM ASSEMBLY
DUE TO IMPROPER
MOUNTING -MATCH TIRE
DIAMETER TO RIM DIAMETER;
NEVER EXCEED 40 psi (275 kPa) TO
SEAT BEADS -ONLY SPECIALLY
TRAINED PERSONS SHOULD
MOUNT TIRES.
TIRE FAILURE DUE TO UNDER -INFLATION/
OVERLOADING/DAMAGE -FOLLOW
OWNER'S MANUAL AND PLACARD
IN VEHICLE -FREQUENTLY CHECK
INFLATION PRESSURE AND INSPECT
FOR DAMAGE.
▼ Information on Temporary Tires
Please refer to the sample below.
1. Temporary tires
2. Nominal width of tire in millimeters
3. Ratio of height to width (aspect
ratio)
4. Diagonal
5. Rim diameter code
6. Load index & speed symbol

Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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T115/70D16 90M is an example of a
tire size and load index rating. Here is
an explanation of the various
components of that tire size and load
index rating. Note that the tire size and
load index rating may be different from
the example.
T
Indicates a tire that may be installed on
cars, SUVs, minivans and light trucks as
designated by the Tire and Rim
Association (T&RA).
115
“115” is the nominal width of the tire
in millimeters. This three-digit number
gives the width in millimeters of the
tire from sidewall edge to sidewall
edge. In general, the larger the
number, the wider the tire.
70
“70” is the aspect ratio. This two-digit
number indicates the tire's ratio of
height to width.
D
“D” is the tire cons truction symbol. D
indicates “diagonal ply construction”.
16
“16” is the wheel rim diameter in
inches.
90
“90” is the Load Index. This two-or
three-digit number indicates how
much weight each tire can support.
M
“M” is the speed rating. The speed
rating denotes the maximum speed for
which the use of the tire is rated.
Letter Rating Speed Rating
M 81 mph
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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Location of the Tire Label(Placard)
▼Location of the Tire Label (Placard)
Yo u w i l l find the tire label containing
tire
inflation pressure by tire size and
other important information on the
driver's side B -pillar or on the edge of
the driver's door frame.

SAMPLE
▼ Recommended Tire In
flation
Pressure
On the tire label you will find the
recommended tire inflation pressure in
both kPa and psi for the tires installed
as original equipment on the vehicle. It
is very important that the inflation
pressure of the tires on your vehicle is
maintained at the recommended
pressure. You should check the tire
pressure regularly to insure that the
proper in flation pressure is maintained.
Refer to Tires on page 9-10.
NOTE
Tire pressures listed on the vehicle
placard or tire information label
indicate the recommended cold tire
in flation pressure, measured when the
tires are cold, after the vehicle has
been parked for at least 3 hours. As
you drive, the temperature in the tire
warms up, increasing the tire pressure.
WARNING
Always check the tire in flation
pressures on a regular basis according
to the recommended tire inflation
pressure on the tire label and in
conjunction with the information in
this owner's manual:
Driving your vehicle with
under-in flated tires is dangerous.
Under-in flation is the most common
cause of failures in any kind of tire and
may result in severe cracking , tread
separation or “blowout”, with
unexpected loss of vehicle control and
increased risk of injury. Under-inflation
increases sidewall flexing and rolling
resistance, resulting in heat buildup
and internal damage to the tire. It
results in unnecessary tire stress,
irregular wear, loss of control and
accidents. A tire can lose up to half of
its air pressure and not appear to be
fl at!
It is impossible to determine whether
or not tires are properly inflated just by
looking at them.
▼ Checking Tire Pressure
1. When you check the air pressure,
make sure the tires are cold
―meaning they are not hot from
driving even a mile.
2. Remove the cap from the valve on
one tire.
3. Firmly press a tire gauge onto the valve.
4. Add air to achieve recommended air pressure.
5. If you over fill the tire, release air by
pushing on the metal stem in the
center of the valve. Then recheck
the pressure with your tire gauge.
6. Replace the valve cap.
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
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